Volume 8, Issue 1 (Spring 2018)                   PTJ 2018, 8(1): 37-44 | Back to browse issues page


XML Print


Download citation:
BibTeX | RIS | EndNote | Medlars | ProCite | Reference Manager | RefWorks
Send citation to:

Allafan N, Shahrbanian S, Rajabi R, Minoonejad H, Bayati M. Comparison of Perceived Musculoskeletal Discomfort Among Six Common Postures for Laptop Use in Female Students. PTJ 2018; 8 (1) :37-44
URL: http://ptj.uswr.ac.ir/article-1-358-en.html
1- Department of Sports Medicine and Health, Faculty of Physical Education and Sport Sciences, University of Tehran, Tehran, Iran.
2- Department of Sport Science, Faculty of Humanities, Tarbiat Modares University, Tehran, Iran.
3- Department of Exercise Physiology, Sports Medicine Research Center, Sport Sciences Research Institute, Tehran, Iran.
Abstract:   (6279 Views)
Purpose: The present study aimed to compare Musculoskeletal Discomforts (MSDs) among six different common postures while working with laptop in female students of University of Tehran, Tehran City, Iran.
Methods: This was a crossover trial study. Eighteen female students voluntarily and purposefully participated in all stages of the study. The study participants were randomly assigned into groups to work for 10 minutes on different postures for laptop use during six continuous nights. MSDs was measured each night after 10 minutes of laptop use. For this purpose, Van der Grinten and Smith (1992) method was applied. The obtained data were analyzed by repeated measures one-way ANOVA at a significance level of P≤0.05, in SPSS.
Results: The obtained results suggested a significant difference among six working postures in MSDs (P=0.005). The results of Bonferroni post hoc analysis revealed that the highest level of MSDs was observed in a cross-legged sitting position on the floor. While, the lowest level of MSDs was found in the sitting on a chair posture. In addition, the study participants who used a desk in order to increase the height of the laptop, reported less levels of MSDs than laptop use in the cross-legged position on the floor (P=0.039) or sitting on the bed (P=0.011).
Conclusion: According to this study, in order to minimize MSDs during working with laptop, it is recommended to use desk and chairs instead of sitting cross-legged on the floor or bed.
Full-Text [PDF 629 kb]   (2228 Downloads) |   |   Full-Text (HTML)  (2008 Views)  
Type of Study: Research | Subject: General
Received: 2018/10/6 | Accepted: 2018/11/11 | Published: 2019/02/19

References
1. Batham C, Yasobant S. A risk assessment study on work-related musculoskeletal disorders among dentists in Bhopal, India. Indian Journal of Dental Research: Official Publication of Indian Society for Dental Research. 2016; 27(3):236-41. [DOI:10.4103/0970-9290.186243] [PMID] [DOI:10.4103/0970-9290.186243]
2. Ardahan M, Simsek H. Analyzing musculoskeletal system discomforts and risk factors in computer-using office workers. Pakistan Journal of Medical Sciences. 2016; 32(6):1425-9. [DOI:10.12669/pjms.326.11436] [PMID] [PMCID] [DOI:10.12669/pjms.326.11436]
3. Park JH, Park JH. Association among work-related musculoskeletal disorders, job stress, and job attitude of occupational therapists. Occupational Therapy in Health Care. 2017; 31(1):34-43. [DOI:10.1080/07380577.2016.1270482] [PMID] [DOI:10.1080/07380577.2016.1270482]
4. Andersen JH, Kaergaard A, Frost P, Thomsen JF, Bonde JP, Fallentin N, et al. Physical, psychosocial, and individual risk factors for neck/shoulder pain with pressure tenderness in the muscles among workers performing monotonous, repetitive work. Spine. 2002; 27(6):660-7. [DOI:10.1097/00007632-200203150-00017] [DOI:10.1097/00007632-200203150-00017]
5. Buckle PW, Devereux JJ. The nature of work-related neck and upper limb musculoskeletal disorders. Applied Ergonomics. 2002; 33(3):207-17. [DOI:10.1016/S0003-6870(02)00014-5] [DOI:10.1016/S0003-6870(02)00014-5]
6. Davis KG, Kotowski SE. Postural variability: An effective way to reduce musculoskeletal discomfort in office work. Human Factors. 2014; 56(7):1249-61. [DOI:10.1177/0018720814528003] [PMID] [DOI:10.1177/0018720814528003]
7. da Costa BR, Vieira ER. Risk factors for work-related musculoskeletal disorders: A systematic review of recent longitudinal studies. American Journal of Industrial Medicine. 2010; 53(3):285-323. [PMID] [PMID]
8. Xie Y, Szeto G, Dai J. Prevalence and risk factors associated with musculoskeletal complaints among users of mobile handheld devices: A systematic review. Applied Ergonomics. 2017; 59(Pt A):132-42.
9. Sethi J, Sandhu JS, Imbanathan V. Effect of body mass index on work related musculoskeletal discomfort and occupational stress of computer workers in a developed ergonomic setup. Sports Medicine, Arthroscopy, Rehabilitation, Therapy & Technology: SMARTT. 2011; 3(1):22. [DOI:10.1186/1758-2555-3-22] [PMID] [PMCID] [DOI:10.1186/1758-2555-3-22]
10. Hamberg-van Reenen HH, van der Beek AJ, Blatter BM, van der Grinten MP, van Mechelen W, Bongers PM. Does musculoskeletal discomfort at work predict future musculoskeletal pain. Ergonomics. 2008; 51(5):637-48. [DOI:10.1080/00140130701743433] [PMID] [DOI:10.1080/00140130701743433]
11. Genaidy AM, Delgado E, Bustos T. Active microbreak effects on musculoskeletal comfort ratings in meatpacking plants. Ergonomics. 1995; 38(2):326-36. [DOI:10.1080/00140139508925107] [PMID] [DOI:10.1080/00140139508925107]
12. Galinsky TL, Swanson NG, Sauter SL, Hurrell JJ, Schleifer LM. A field study of supplementary rest breaks for data-entry operators. Ergonomics. 2000; 43(5):622-38. [DOI:10.1080/001401300184297] [PMID] [DOI:10.1080/001401300184297]
13. McLean L, Tingley M, Scott RN, Rickards J. Computer terminal work and the benefit of microbreaks. Applied Ergonomics. 2001; 32(3):225-37. [DOI:10.1016/S0003-6870(00)00071-5] [DOI:10.1016/S0003-6870(00)00071-5]
14. Fenety A, Walker JM. Short-term effects of workstation exercises on musculoskeletal discomfort and postural changes in seated video display unit workers. Physical Therapy. 2002; 82(6):578-89. [PMID] [PMID]
15. Wahlstrom J. Ergonomics, musculoskeletal disorders and computer work. Occupational Medicine (Oxford, England). 2005; 55(3):168-76. [DOI:10.1093/occmed/kqi083] [PMID] [DOI:10.1093/occmed/kqi083]
16. Hamzat TK, Abdulkareem TA, Akinyinka OO, Fatoye FA. Backpack-related musculoskeletal symptoms among Nigerian secondary school students. Rheumatology International. 2014; 34(9):1267-73. [DOI:10.1007/s00296-014-2962-x] [PMID] [DOI:10.1007/s00296-014-2962-x]
17. Shabbir M, Rashid S, Umar B, Ahmad A, Ehsan S. Frequency of neck and shoulder pain and use of adjustable computer workstation among bankers. Pakistan Journal of Medical Sciences. 2016; 32(2):423-6. [PMID] [PMCID] [PMID] [PMCID]
18. Anareh Z, ZohoorAlinia Z. [Musculoskeletal disorders among computer operators: A study in one of the governmental organizations in Kerman city, Iran (Persian)]. Journal of Health and Development. 2016; 5(3):216-25.
19. Jacobs K, Foley G, Punnett L, Hall V, Gore R, Brownson E, et al. University students' notebook computer use: Lessons learned using e-diaries to report musculoskeletal discomfort. Ergonomics. 2011; 54(2):206-19. [DOI:10.1080/00140139.2010.544764] [PMID] [DOI:10.1080/00140139.2010.544764]
20. D'Silva C. The ergonomic evaluation of laptop use in university students: The development and test-retest reliability of the student laptop use and musculoskeletal posture questionnaire [PhD. dissertation]. Oshawa: University of Ontario Institute of Technology; 2016.
21. Gold JE, Driban JB, Yingling VR, Komaroff E. Characterization of posture and comfort in laptop users in non-desk settings. Applied Ergonomics. 2012; 43(2):392-9. [DOI:10.1016/j.apergo.2011.06.014] [PMID] [DOI:10.1016/j.apergo.2011.06.014]
22. Rafiee M, Mokhtarinia HR, Hadad O, Reza Soltani P. [Pain and discomfort in laptop users: Prevalence and its relation to adopted posture (Persian)]. Razi Journal of Medical Sciences. 2014; 21(122):37-45.
23. Straker L, Jones KJ, Miller J. A comparison of the postures assumed when using laptop computers and desktop computers. Applied Ergonomics. 1997; 28(4):263-8. [DOI:10.1016/S0003-6870(96)00073-7] [DOI:10.1016/S0003-6870(96)00073-7]
24. Bubric K, Hedge A. Differential patterns of laptop use and associated musculoskeletal discomfort in male and female college students. Work (Reading, Mass). 2016; 55(3):663-71. [DOI:10.3233/WOR-162419] [DOI:10.3233/WOR-162419]
25. Mingels S, Dankaerts W, van Etten L, Thijs H, Granitzer M. Comparative analysis of head-tilt and forward head position during laptop use between females with postural induced headache and healthy controls. Journal of Bodywork and Movement Therapies. 2016; 20(3):533-41. [DOI:10.1016/j.jbmt.2015.11.015] [PMID] [DOI:10.1016/j.jbmt.2015.11.015]
26. Hough R, Nel M. Time and space dimensions of computer laptop use amongst third year students of the University of the Free State. South African Journal of Occupational Therapy. 2016; 46(1):27-32. [DOI:10.17159/2310-3833/2016/v46n1a7] [DOI:10.17159/2310-3833/2016/v46n1a7]
27. Jonai H, Villanueva MBG, Takata A, Sotoyama M, Saito S. Effects of the liquid crystal display tilt angle of a notebook computer on posture, muscle activities and somatic complaints. International Journal of Industrial Ergonomics. 2002; 29(4):219-29. [DOI:10.1016/S0169-8141(01)00065-8] [DOI:10.1016/S0169-8141(01)00065-8]
28. Asundi K, Odell D, Luce A, Dennerlein JT. Changes in posture through the use of simple inclines with notebook computers placed on a standard desk. Applied Ergonomics. 2012; 43(2):400-7. [DOI:10.1016/j.apergo.2011.06.013] [PMID] [DOI:10.1016/j.apergo.2011.06.013]
29. Straker L, Pollock C, Burgess-Limerick R, Skoss R, Coleman J. The impact of computer display height and desk design on muscle activity during information technology work by young adults. Journal of Electromyography and Kinesiology: Official Journal of the International Society of Electrophysiological Kinesiology. 2008; 18(4):606-17. [DOI:10.1016/j.jelekin.2006.09.015] [PMID] [DOI:10.1016/j.jelekin.2006.09.015]
30. Sommerich CM, Starr H, Smith CA, Shivers C. Effects of notebook computer configuration and task on user biomechanics, productivity, and comfort. International Journal of Industrial Ergonomics. 2002; 30(1):7-31. [DOI:10.1016/S0169-8141(02)00075-6] [DOI:10.1016/S0169-8141(02)00075-6]
31. Lin MY, Barbir A, Dennerlein JT. Evaluating biomechanics of user-selected sitting and standing computer workstation. Applied Ergonomics. 2017; 65:382-88. [DOI:10.1016/j.apergo.2017.04.006] [PMID] [DOI:10.1016/j.apergo.2017.04.006]
32. Fogleman M, Lewis RJ. Factors associated with self-reported musculoskeletal discomfort in Video Display Terminal (VDT) users. International Journal of Industrial Ergonomics. 2002; 29(6):311-8. [DOI:10.1016/S0169-8141(01)00071-3] [DOI:10.1016/S0169-8141(01)00071-3]
33. Moffet H, Hagberg M, Hansson-Risberg E, Karlqvist L. Influence of laptop computer design and working position on physical exposure variables. Clinical Biomechanics (Bristol, Avon). 2002; 17(5):368-75. [DOI:10.1016/S0021-9290(02)00062-3] [DOI:10.1016/S0021-9290(02)00062-3]
34. Asundi K, Odell D, Luce A, Dennerlein JT. Notebook computer use on a desk, lap and lap support: Effects on posture, performance and comfort. Ergonomics. 2010; 53(1):74-82. [DOI:10.1080/00140130903389043] [PMID] [DOI:10.1080/00140130903389043]
35. Villanueva MB, Jonai H, Sotoyama M, Hisanaga N, Takeuchi Y, Saito S. Sitting posture and neck and shoulder muscle activities at different screen height settings of the visual display terminal. Industrial Health. 1997; 35(3):330-6. [DOI:10.2486/indhealth.35.330] [PMID] [DOI:10.2486/indhealth.35.330]
36. Simoneau GG, Marklin RW. Effect of computer keyboard slope and height on wrist extension angle. Human Factors. 2001; 43(2):287-98. [DOI:10.1518/001872001775900940] [PMID] [DOI:10.1518/001872001775900940]

Add your comments about this article : Your username or Email:
CAPTCHA

Send email to the article author


Rights and permissions
Creative Commons License This work is licensed under a Creative Commons Attribution-NonCommercial 4.0 International License.

© 2024 CC BY-NC 4.0 | Physical Treatments - Specific Physical Therapy Journal

Designed & Developed by: Yektaweb